Earth Retention System
We plan and construct excavation pits considering side conditions. According to the requirements we execute slope protection, contiguous pile walls, Secant Piles wall , sheet pile, bored pile etc .. Necessary retaining systems such as anchors or struts.
Additionally dewatering measures and the execution of all earth works is part of our range of services.
Contiguous Pile Wall
A spaced pile wall system is built with a series of bored piles – with center-to-center spacings not exceeding the diameter of three piles.
The stability of the piles is ensured either by the self strength of the piles or by using rows of internal bracing or prestressed anchors. Steel reinforcement is used in every pile and consists of either a steel cage or steel profiles.
Secant Pile Walls
Secant Pile Walls are interlocking cast in-situ bored piles forming a continuous wall by drilling under mud .The system is generally used in water-bearing soils, utilizing primary non-reinforced piles and secondary reinforced piles. Pile overlap is typically in the order of 10 cm).
Soil Nail Walls
Soil nail walls consists of installing passive reinforcement (i.e., no post-tensioning) in existing ground by installing closely spaced steel bars and placing a front face support. Soil nailing can be used to stabilize, deep excavations, slope faces, to stabilize existing slopes . Soil Nail walls are constructed from the top down and include several rows of passive inclusions with a shotcrete facing.Soil nail walls have very flexible shapes and can adapt to almost any geometry.
shotcrete is used to support the soils between spaced piles – or on nail walls – and can be smoothened to facilitate the application of waterproofing membranes.
Bored piles are cylindrical bodies made of concrete (with or without reinforcement) which are installed in the ground by a variety of methods. They transmit high structural loads into lower, load-bearing soils.
CFA piles are constructed by rotating a hollow stem continuous flight auger into the soil to a designed depth. Concrete or grout is pumped through the hollow stem, maintaining static head pressure, to fill the cylindrical cavity created as the auger is slowly removed.